Two ovigerous females of the brachyuran crab Chaceon mediterraneus Manning & Holthuis, 1989, were captured at two different bottom trawl stations on the lower slope in the Catalan Sea. This is the third record of this species from the Mediterranean Sea, where it seems to be endemic, and the first record from Iberian waters. Chaceon mediterraneus was cited previously only at two locations in the Western Basin. Both specimens presented certain abnormalities in the anterolateral spines of the carapace.